Equations & reaction Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
4Al + 3O₂ → 2Al₂O₃ In the equation above, what is the coefficient of the oxygen molecule? | The coefficient of the oxygen molecule is 3. |
4Al + 3O₂ → 2Al₂O₃ In the equation above, what is the subscript of the oxygen molecule? | The subscript of the oxygen molecule is 2. |
Elements and compounds on the left side of the equation are called _____________. | Reactants |
Elements and compounds on the right side of the equation are called _____________. | Product |
What is the product? | It is the new substance that is formed during a chemical reaction. It is found on the right side of the equation |
What law states that the same number of atoms of each of the elements must be found in both the reactants and the products of the reaction? | Law of Conservation of Mass |
What 5 pieces of evidence show that a chemical reaction has occurred? | 1. Formation of a precipitate (PLEASE) 2. Change in temperature (EXCUSE) 3. Color change (COUGH) 4. Change of odor (SNEEZES) 5. Bubbles (BURPS) |
Determine the number of atoms of each element in the substance NaHCO₃. | Sodium= 1 Hydrogen= 1 Carbon= 1 Oxygen= 3 |
Determine the number of atoms of each element in the substance 2NaOH. | Sodium=2 Oxygen=2 Hydrogen=2 |
Balance the following equation: ____ Ti(OH)₃ → ____ Ti₂O₃ + ____H₂O | 2Ti(OH)₃ → 1Ti₂O₃ + 3H₂O |
Balance the following equation: ____ Ag₂O + ____ C → ____ Ag + ____ CO₂ | 2Ag₂O + 1C → 4Ag + 1CO₂ |
Write this in equation form: 2Ag₂O is formed when 4Ag reacts with O₂. | 4Ag + O₂ → 2Ag₂O explained. it states that 2Ag2O is formed (this this the product) when 4Ag reacts with O2 (reactant side) |
What does RAP stand for | Reactant on the Left, Product on the Right Reactant/ Arrow/ Product |
New substances formed in a chemical reaction are found on the _________ side of the equation. | right |
What does the arrow in a chemical equation mean? | Yields |
Which of the following equations follows the Law of Conservation of Mass? A: C₂H₄ + 3O₂ → 2CO₂ + 2H₂O B: C + 4H₂→ CH₄ C: 2Na + Cl → NaCl D: 3H₂O → 3H₂ + 3O₂ | A. C₂H₄ + 3O₂ → 2CO₂ + 2H₂O |
What is the definition of a subscript? | Shows how many atoms of an element are in a molecule. |
What is the definition of a coefficient? | Shows how many molecules there are of a particular chemical. |
True or False: If a chemical equation is unbalanced, then change the subscripts in order to balance it. | False! You can only change the coefficients in a chemical equation. |
Balance the following equation: _____C₃H₈ + _____O₂ → _____CO₂ + _____H₂O | C₃H₈ + 5O₂ → 3CO₂ + 4H₂O |
Is the following equation balanced? If not, what is the correctly balanced equation? Fe + Cl₂ → FeCl₃ | The equation is not balanced. The correct formula is 2Fe + 3Cl₂ → 2FeCl₃ |
Which of the following represents a physical change? A. Production of an odor B. Change in color C. An ice cube melting D. Change in temperature | C. An ice cube melting |
How many molecules of 2NH4 are there | The coefficient is a 2 so that means there are 2 molecules |
Created by:
ccgalloway
Popular Chemistry sets